Circumference and Area

What is the diameter?

• 6.5

• 15

• 26

• 78

The distance around a circle; much like the perimeter of a rectangle.

• perimeter

• diameter

• circumference

• radius

What is the perimeter of the semi-circle?

• 11 yd

• 17.27 yd

• 34.54 yd

• 28.27 yd

The distance around a circular track is 31.4 yards. What Is the radius of the track?

• r=10

• r=5

• r=98.6

What is the perimeter of this semi circle? (Use 3.14 = π and round to the nearest tenths place)

• 18.5

• 11.3

• 20.3

• 22.6

What is the perimeter of this semi circle? (Use 3.14 = π and round to the nearest tenths place)

• 12.6

• 20.6

• 25.1

• 33.1

What is the diameter?

• 8

• 16

• 10

• 4

what is the circumference of this circle ?

• 3.14 cm 

• 37.68 cm

• 24 cm

• 68.4 cm

A Circle has a diameter of 10 centimeters.  What is the circumference of the circle? (Best Choice)

• 5π or about 15.7 cm

• 10π or about 31.4 cm

• 20π or about 62.8 cm

• 100π or about 314 cm 

What is the circumference of this circle ?

• 3.14 cm 

• 37.68 cm

• 24 cm

• 68.4 cm